DE1234211C2 - Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydride - Google Patents
Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydrideInfo
- Publication number
- DE1234211C2 DE1234211C2 DE1963B0073159 DEB0073159A DE1234211C2 DE 1234211 C2 DE1234211 C2 DE 1234211C2 DE 1963B0073159 DE1963B0073159 DE 1963B0073159 DE B0073159 A DEB0073159 A DE B0073159A DE 1234211 C2 DE1234211 C2 DE 1234211C2
- Authority
- DE
- Germany
- Prior art keywords
- acid dianhydride
- parts
- anhydride
- acid
- filtrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
- C08G63/54—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation the acids or hydroxy compounds containing carbocyclic rings
- C08G63/553—Acids or hydroxy compounds containing cycloaliphatic rings, e.g. Diels-Alder adducts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4215—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof cycloaliphatic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
- Indole Compounds (AREA)
Description
Es wurde gefunden, daß man 3,6-Endoäthylenpr !^^,S-cyclohexantetracarbonsäure-dianhydriderhält, wenn man zl-S^-trans-Cyclohexadien-ljS-dicarbonsäure mit Maleinsäureanhydrid in Gegenwart von Essigsäureanhydrid bei Temperatoren vpn 50 bis 150° C umsetzt. Vorzugsweise werden Temperaturen von 80 bis 130° C eingehalten.It has been found that 3,6-Endoäthylenpr ! ^^, S-cyclohexanetetracarboxylic acid dianhydride contains, if one zl-S ^ -trans-cyclohexadiene-ljS-dicarboxylic acid with maleic anhydride in the presence of acetic anhydride at temperatures from 50 to 150 ° C. Temperatures of 80 to 130 ° C. are preferably maintained.
Das 3,6 -Endoäthyleno -1,2,4,5 - cyclohexantetracarbonsäure-dianhydrid fällt in Form weißer, sehr reiner Kristalle, die nicht mehr umkristallisiert werden müssen, aus der Mischung aus. Es dient als Härter für Epoxyharze und ist ferner für die Herstellung von Polyestern und Polyimiden verwendbar.The 3,6-endoethyleno -1,2,4,5-cyclohexanetetracarboxylic acid dianhydride falls in the form of white, very pure crystals that are no longer recrystallized need to get out of the mix. It serves as a hardener for epoxy resins and is also used in manufacturing of polyesters and polyimides can be used.
Aus der deutschen Patentschrift 526 168, Seite 7, Beispiel 28, ist die Umsetzung von .4-3,5-CiS-CyCIohexadien-l,2-dicarbonsäureanhydrid mit Maleinsäureanhydrid zum 3,6rEndpäthylenprl,2,4,5rCyclphexanr tetracarbonsäure-dianhydrid in der Schmelze bekannt. Bei diesem Verfahren fällt das Umsetzungsprodukt in wenig reiner Form an und muß wegen der Schwerlöslichkeit der Endoäthylenverbindung mit Hilfe großer Mengen teurer organischer Lösungsmittel umkristallisiert werden. Eine Übertragung des Verfahrens auf die trans-Verbindung ist nicht möglich, da diese sich leicht in die resonanzstabilisierte A-2,6-Cyclohexadien-1,2-dicarbonsäure umlagert. Eigene Versuche mit der AS^-tian^-Cycldhexadienr 1,2-dicarbonsäure bestätigten dann die Erwartung, daß diese Säure einer Dien-Synthese nicht zugänglich ist.From the German patent 526 168, page 7, example 28, the implementation of .4-3,5-CiS-CyCIohexadien-1,2-dicarboxylic anhydride with maleic anhydride to 3,6rEndpäthylenprl, 2,4,5rCyclphexanr tetracarboxylic acid dianhydride in the Known melt. In this process, the reaction product is obtained in a poorly pure form and, because of the poor solubility of the endoethylene compound, has to be recrystallized with the aid of large amounts of expensive organic solvents. It is not possible to transfer the process to the trans compound, since this easily rearranges into the resonance-stabilized A-2,6- cyclohexadiene-1,2-dicarboxylic acid. Our own experiments with the AS ^ -tian ^ -Cycldhexadienr 1,2-dicarboxylic acid then confirmed the expectation that this acid is not amenable to a diene synthesis.
Es war überraschend, daß bei Gegenwart von Essigsäureanhydrid nicht nur die unerwünschte Umlagerung in die /1-2,6-Verbindung vermieden, sondern auch ohne besondere zusätzliche Maßnahmen die gesuchte Endoäthylenverbindung direkt hergestellt werden kann.It was surprising that in the presence of acetic anhydride not only the undesired rearrangement avoided in the / 1-2,6 connection, but also without special additional measures the endoethylene compound sought can be produced directly.
Die in den Beispielen 1 bis 3 genannten Teile sind Gewichtsteile.The parts mentioned in Examples 1 to 3 are parts by weight.
: Beispiel;! . " ■ ' : Example ;! . "■ '
42 Teile /1-3,5-trans-Cyclohexadien-l,2-dicarbonsäure und 24,5 Teile Maleinsäureanhydrid werden mit 300 Teilen Essigsäureanhydrid versetzt und unter Rühren auf 80° C erwärmt. Wenn diese Temperatur erreicht ist, liegt eine klare Lösung vor, die nun bis auf 125° C weitererhitzt wird. Man hält diese Temperatur während 3 Stunden aufrecht, wobei nach 10 Minuten die ersten Kristalle abgeschieden werden, kühlt dann die Mischung auf gewöhnliche Tempe-Analysenwerte: 42 parts / 1-3,5-trans-cyclohexadiene-1,2-dicarboxylic acid and 24.5 parts of maleic anhydride are mixed with 300 parts of acetic anhydride and below Stirring heated to 80 ° C. When this temperature is reached, there is a clear solution, which is now up to is further heated to 125 ° C. This temperature is maintained for 3 hours, after which 10 minutes the first crystals are deposited, then the mixture cools to normal temperature analysis values:
Berechnet...
gefunden ...Calculated...
found ...
Summenformel:Molecular formula:
C12H8°6 C 12 H 8 ° 6
M. G. 248.M.G. 248.
C 58,2%, H 3,2Vo, O 38,7 S/o;
C 58,4%, H 3,0Vo, O 38,6,Vp.C 58.2%, H 3.2 Vo, O 38.7 S / o;
C 58.4%, H 3.0Vo, O 38.6, vp.
Man erwärmt eine Mischung von 42 Teilen zf-3,5-trans-Cyclohexadien-l,2-dicarbonsäure, 73,5 Teilen Maleinsäureanhydrid und 231 Teilen Essigsäureanhydrid unter Rühren auf 60^ G, hält die däfeei entstehende klare Lösung währencj 20 Stunden |>ej einer Temperatur von 50° C, läßt sie dann auf Umgebungstemperatur abkühlen und filtriert. Das Filtrat wird auf ein Drittel des ursprünglichen Volumens eingeengt und nach dem Abkühlen der Filtration unterworfen; man nimmt dieselbe Operation mit dem dabei erhaltenen Filtrat nochmals vor. Schließlich bringt man den eingedickten, öligen Rückstand durch Zusatz von Aceton zum Kristallisieren, suspendiert die vereinigten Kristallfraktionen im gleichen Lösungsmittel, saugt die Kristalle a^ und trocknet sie.A mixture of 42 parts of zf-3,5-trans-cyclohexadiene-1,2-dicarboxylic acid is heated, 73.5 parts of maleic anhydride and 231 parts of acetic anhydride to 60 ^ G with stirring, the däfeei resulting holds clear solution for 20 hours |> ej one Temperature of 50 ° C, then allowed to cool to ambient temperature and filtered. The filtrate will concentrated to one third of the original volume and, after cooling, subjected to filtration; the same operation is carried out again with the filtrate obtained. In the end the thickened, oily residue is made to crystallize by adding acetone, and is suspended the combined crystal fractions in the same solvent, sucks the crystals a ^ and dries them.
Der Schmelzpunkt des so erhaltenen 3,6-Endoätll The melting point of the 3,6-endoethyl thus obtained
y^p^g^y drids beträgt 351 "bis" 352° C, die Ausbeute 46,5 Teile entsprechend 75 %y ^ p ^ g ^ y drids is 351 "to" 352 ° C, the yield 46.5 parts corresponding to 75%
Man erhitzt eine Lösung von 42 Teilen /1-3,5-trans-Cyclohexadien-1,2-dicarbonsäure und 27 Teilen Maleinsäureanhydrid in 138 Teilen Essigsäureanhydrid unter Rühren während 1 Stunde am Rückfluß zum Sieden bei einer Temperatur von 139° C, wobei nach etwa 10 Minuten die ersten Kristalle ausgeschieden werden. Die Umsetzungsmischung wird dann auf Umgebungstemperatur abgekühlt und filtriert. Das Filtrat engt man auf ein Drittel des ursprünglichen Vplumens ein, filtriert nach derü Abkühlen wiederum und nimmt dieselbe Qperatipn mn; dem nun erhaltenen Fikrat nochmals vor. Schließlich bringt man den eingedickten, öligen Rückstand durch Zusatz von Aceton zum Kristallisieren, suspendiert die vereinigten Kri-Stallfraktionen im gleichen Lösungsmittel, saugt die Kristalle ab und trocknet sie.A solution of 42 parts / 1-3,5-trans-cyclohexadiene-1,2-dicarboxylic acid is heated and 27 parts of maleic anhydride in 138 parts of acetic anhydride with stirring for 1 hour under reflux to boiling at a temperature of 139 ° C, with after the first crystals are separated out in about 10 minutes. The implementation mix is then on Cooled to ambient temperature and filtered. The filtrate is concentrated to a third of the original Vplumens one, filtered again after cooling down and takes the same Qperatipn mn; the now received Fikrat again. Finally you bring the thickened, oily residue by adding acetone to crystallize, the combined Kri-stable fractions are suspended in the same solvent, sucks the crystals and dries them.
Der Schmelzpunkt des so erhaltenen 3,6-Endoäthyleno-1 ^^,S-Cyclohexantetracarbonsäure-dianhydrids beträgt 351 bis 352° C, die Ausbeute 58,4 Teile entsprechend 94 Vo der Theorie.The melting point of the 3,6-endoäthyleno-1 thus obtained ^^, S-Cyclohexanetetracarboxylic acid dianhydrides is 351 to 352 ° C, the yield 58.4 parts corresponding to 94 Vo of theory.
Claims (1)
äthyleno -1,2,4,5- cyclohexantetr acarbonsaur e - di anhydrid, dadurch gekennzeichnet, daß man ^,S-trans-Cyclohexadien-l ,2-dicarbonsäure mit Maleinsäureanhydrid in Gegenwart von Essigsäureanhydrid bei Temperaturen von 50 bis 150° C umsetzt.Process for the production of ^
Ethyleno -1,2,4,5-cyclohexantetr acarboxylic acid e - di anhydride, characterized in that ^, S-trans-cyclohexadiene-1,2-dicarboxylic acid is reacted with maleic anhydride in the presence of acetic anhydride at temperatures of 50 to 150 ° C .
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1963B0073159 DE1234211C2 (en) | 1963-08-17 | 1963-08-17 | Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydride |
DE1963B0074618 DE1241444C2 (en) | 1963-08-17 | 1963-12-11 | Process for the preparation of cyclic carboxylic acid derivatives by diene synthesis at 50 to 150 |
CH993164A CH433271A (en) | 1963-08-17 | 1964-07-29 | Process for the preparation of bicyclic carboxylic acid derivatives |
GB32972/64A GB1070866A (en) | 1963-08-17 | 1964-08-13 | Production of bicyclic carboxylic acid derivatives |
NL6409347A NL6409347A (en) | 1963-08-17 | 1964-08-13 | |
BE651871D BE651871A (en) | 1963-08-17 | 1964-08-14 | |
FR985240A FR1406214A (en) | 1963-08-17 | 1964-08-14 | Process for the preparation of bicyclic carboxylic acid derivatives |
US739947*A US3522277A (en) | 1963-08-17 | 1968-05-28 | 3,6 - endoethyleno - 4 - cyano - cyclohexanedicarboxylic - (1,2) - anhydride and process for diels-alder addition using cyclohexa - 3,5 - diene - trans - 1,2 - dicarboxylic acid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1963B0073159 DE1234211C2 (en) | 1963-08-17 | 1963-08-17 | Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydride |
DE1963B0074618 DE1241444C2 (en) | 1963-08-17 | 1963-12-11 | Process for the preparation of cyclic carboxylic acid derivatives by diene synthesis at 50 to 150 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1234211B DE1234211B (en) | 1967-02-16 |
DE1234211C2 true DE1234211C2 (en) | 1974-08-22 |
Family
ID=25966751
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1963B0073159 Expired DE1234211C2 (en) | 1963-08-17 | 1963-08-17 | Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydride |
DE1963B0074618 Expired DE1241444C2 (en) | 1963-08-17 | 1963-12-11 | Process for the preparation of cyclic carboxylic acid derivatives by diene synthesis at 50 to 150 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1963B0074618 Expired DE1241444C2 (en) | 1963-08-17 | 1963-12-11 | Process for the preparation of cyclic carboxylic acid derivatives by diene synthesis at 50 to 150 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3522277A (en) |
BE (1) | BE651871A (en) |
CH (1) | CH433271A (en) |
DE (2) | DE1234211C2 (en) |
GB (1) | GB1070866A (en) |
NL (1) | NL6409347A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3929711A (en) * | 1973-10-12 | 1975-12-30 | Standard Oil Co Ohio | Dicyclohexadiene tetraacyl compounds |
DE2555254A1 (en) * | 1975-12-09 | 1977-06-23 | Basf Ag | METHOD FOR MANUFACTURING BICYCLO SQUARE CLAMP ON 2.2.2 SQUARE CLAMP TO OCT-7-EN-2,3,5,6-TETRACARBONIC ACID DIANHYDRIDE |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE526168C (en) * | 1927-11-06 | 1931-06-17 | I G Farbenindustrie Akt Ges | Process for the preparation of compounds with hydrogenated ring systems |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2813135A (en) * | 1955-02-08 | 1957-11-12 | Exxon Research Engineering Co | Multi-stage cyclodiene dimerizing process |
-
1963
- 1963-08-17 DE DE1963B0073159 patent/DE1234211C2/en not_active Expired
- 1963-12-11 DE DE1963B0074618 patent/DE1241444C2/en not_active Expired
-
1964
- 1964-07-29 CH CH993164A patent/CH433271A/en unknown
- 1964-08-13 GB GB32972/64A patent/GB1070866A/en not_active Expired
- 1964-08-13 NL NL6409347A patent/NL6409347A/xx unknown
- 1964-08-14 BE BE651871D patent/BE651871A/xx unknown
-
1968
- 1968-05-28 US US739947*A patent/US3522277A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE526168C (en) * | 1927-11-06 | 1931-06-17 | I G Farbenindustrie Akt Ges | Process for the preparation of compounds with hydrogenated ring systems |
Also Published As
Publication number | Publication date |
---|---|
DE1241444B (en) | 1967-06-01 |
GB1070866A (en) | 1967-06-07 |
US3522277A (en) | 1970-07-28 |
NL6409347A (en) | 1965-02-18 |
CH433271A (en) | 1967-04-15 |
BE651871A (en) | 1965-02-15 |
DE1241444C2 (en) | 1974-08-22 |
DE1234211B (en) | 1967-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0004919A1 (en) | Process for preparing N,N,N',N'-tetra-acetylethylene diamine | |
DE1234211C2 (en) | Process for the preparation of 3, 6-endoaethyleno-1, 2, 4, 5-cyclohexanetetracarboxylic acid dianhydride | |
DE2263247C3 (en) | Process for purifying anthraquinone | |
EP0353645A2 (en) | Process for preparing high-purity 5,5-[2,2,2-trifluoro-1-(trifluoromethyl)-ethylidene] bis-1,3-isobenzofuran dione | |
DE2247971C3 (en) | Process for the preparation of 3'-hydroxyquinophthalones | |
DE865925C (en) | Process for the preparation of basic polymethine dyes | |
DE505323C (en) | Process for the preparation of N-oxyaethyl derivatives of 2,4-diamino-1-oxybenzene and its derivatives | |
DE1793463C3 (en) | ||
DE567755C (en) | Process for the preparation of anthraquinone derivatives | |
AT210874B (en) | Process for the preparation of new polysulfonic acid esters | |
DE651611C (en) | Process for the preparation of phthalonitriles | |
DE1570250A1 (en) | Process for the preparation of esterimide resins | |
DE1901028A1 (en) | Polyimides | |
DE939151C (en) | Process for the preparation of aminocarboxylic acid-N, N-alkyleneimides | |
DE1000383C2 (en) | Process for the preparation of benzanthronylpyrazole anthrones | |
DE2410954C3 (en) | Process for the preparation of phthalimide- or cyclohexene-1,2-dicarboximido-thionophosphates | |
DE478844C (en) | Process for the production of 6-nitrosafrol | |
DE555934C (en) | Process for the preparation of clusters of 3-aminoacridine | |
DE950912C (en) | Process for the production of ª ‰ -amino- (N-sulfosaeure) -carboxylic acids or their esters and salts | |
DE579918C (en) | Process for the preparation of intermediate products which are substituted in the naphthalene nucleus by at least one carboxyl group and at the same time contain a heterocyclic nucleus | |
DE630220C (en) | Process for the production of capsules of the anthraquinone series | |
DE346188C (en) | Process for the preparation of 1-amino-2-anthraquinone aldehyde | |
CH435253A (en) | Process for the continuous production of tetrahydrophthalic anhydride | |
DE2605187A1 (en) | S-TRIAZINE HEXACARBON ACIDS AND THEIR ANHYDRIDES | |
DE2254199B2 (en) | Process for the preparation of nitrohydroxy-anthraquinones |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EHJ | Ceased/non-payment of the annual fee |